Function mp_register_gsi() is only called once, so fold it into caller
acpi_register_gsi_ioapic(). Do the same for mp_unregister_gsi().

Signed-off-by: Jiang Liu <jiang....@linux.intel.com>
Cc: Konrad Rzeszutek Wilk <konrad.w...@oracle.com>
Cc: Tony Luck <tony.l...@intel.com>
Cc: Joerg Roedel <j...@8bytes.org>
Cc: Greg Kroah-Hartman <gre...@linuxfoundation.org>
Cc: Bjorn Helgaas <bhelg...@google.com>
Cc: Benjamin Herrenschmidt <b...@kernel.crashing.org>
Cc: Rafael J. Wysocki <r...@rjwysocki.net>
Cc: Randy Dunlap <rdun...@infradead.org>
Cc: Yinghai Lu <ying...@kernel.org>
Cc: Borislav Petkov <b...@alien8.de>
Cc: Len Brown <len.br...@intel.com>
Cc: Pavel Machek <pa...@ucw.cz>
Link: 
http://lkml.kernel.org/r/1416901802-24211-37-git-send-email-jiang....@linux.intel.com
Signed-off-by: Thomas Gleixner <t...@linutronix.de>
Tested-by: Joerg Roedel <jroe...@suse.de>
---
 arch/x86/kernel/acpi/boot.c |   57 ++++++++++++++-----------------------------
 1 file changed, 18 insertions(+), 39 deletions(-)

diff --git a/arch/x86/kernel/acpi/boot.c b/arch/x86/kernel/acpi/boot.c
index dac090468f75..5d91ceb248f0 100644
--- a/arch/x86/kernel/acpi/boot.c
+++ b/arch/x86/kernel/acpi/boot.c
@@ -400,42 +400,6 @@ static int mp_config_acpi_gsi(struct device *dev, u32 gsi, 
int trigger,
        return 0;
 }
 
-static int mp_register_gsi(struct device *dev, u32 gsi, int trigger,
-                          int polarity)
-{
-       int irq, node;
-       struct irq_alloc_info info;
-
-       if (acpi_irq_model != ACPI_IRQ_MODEL_IOAPIC)
-               return gsi;
-
-       trigger = trigger == ACPI_EDGE_SENSITIVE ? 0 : 1;
-       polarity = polarity == ACPI_ACTIVE_HIGH ? 0 : 1;
-       node = dev ? dev_to_node(dev) : NUMA_NO_NODE;
-       ioapic_set_alloc_attr(&info, node, trigger, polarity);
-       irq = mp_map_gsi_to_irq(gsi, IOAPIC_MAP_ALLOC, &info);
-       if (irq < 0)
-               return irq;
-
-       /* Don't set up the ACPI SCI because it's already set up */
-       if (enable_update_mptable && acpi_gbl_FADT.sci_interrupt != gsi)
-               mp_config_acpi_gsi(dev, gsi, trigger, polarity);
-
-       return irq;
-}
-
-static void mp_unregister_gsi(u32 gsi)
-{
-       int irq;
-
-       if (acpi_irq_model != ACPI_IRQ_MODEL_IOAPIC)
-               return;
-
-       irq = mp_map_gsi_to_irq(gsi, 0, NULL);
-       if (irq > 0)
-               mp_unmap_irq(irq);
-}
-
 static struct irq_domain_ops acpi_irqdomain_ops = {
        .alloc = mp_irqdomain_alloc,
        .free = mp_irqdomain_free,
@@ -657,10 +621,21 @@ static int acpi_register_gsi_ioapic(struct device *dev, 
u32 gsi,
                                    int trigger, int polarity)
 {
        int irq = gsi;
-
 #ifdef CONFIG_X86_IO_APIC
+       int node;
+       struct irq_alloc_info info;
+
+       node = dev ? dev_to_node(dev) : NUMA_NO_NODE;
+       trigger = trigger == ACPI_EDGE_SENSITIVE ? 0 : 1;
+       polarity = polarity == ACPI_ACTIVE_HIGH ? 0 : 1;
+       ioapic_set_alloc_attr(&info, node, trigger, polarity);
+
        mutex_lock(&acpi_ioapic_lock);
-       irq = mp_register_gsi(dev, gsi, trigger, polarity);
+       irq = mp_map_gsi_to_irq(gsi, IOAPIC_MAP_ALLOC, &info);
+       /* Don't set up the ACPI SCI because it's already set up */
+       if (irq >= 0 && enable_update_mptable &&
+           acpi_gbl_FADT.sci_interrupt != gsi)
+               mp_config_acpi_gsi(dev, gsi, trigger, polarity);
        mutex_unlock(&acpi_ioapic_lock);
 #endif
 
@@ -670,8 +645,12 @@ static int acpi_register_gsi_ioapic(struct device *dev, 
u32 gsi,
 static void acpi_unregister_gsi_ioapic(u32 gsi)
 {
 #ifdef CONFIG_X86_IO_APIC
+       int irq;
+
        mutex_lock(&acpi_ioapic_lock);
-       mp_unregister_gsi(gsi);
+       irq = mp_map_gsi_to_irq(gsi, 0, NULL);
+       if (irq > 0)
+               mp_unmap_irq(irq);
        mutex_unlock(&acpi_ioapic_lock);
 #endif
 }
-- 
1.7.10.4

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